Dwarf GP

Name	Dwarf GP
Alias	GP-967 [view all 2]
GRIN ID	PI 668119
Type	Breeding Germplasm
Species	Gossypium hirsutum
In Collection	[view all]
Description	The Dwarf GP is a four-parent population that was designed to introduce dwarfing genes into non-dwarf backgrounds. The Dwarf GP had short observed plant heights and a narrow range of values for most traits. Dwarf GP had a low lint index (4.85 g; range = 3.15-6.89 g), small boll size (3.56 g; range = 1.84-4.88 g), short fiber length (24.53 mm; range = 22.61-26.67 mm), and low micronaire (3.94 units; range = 2.5-5.4 units). Lint yield averaged 474 kg ha-1 (range = 178-871 kg ha-1), seed index averaged 9.91 g (range = 6.28-12.92 g), fiber strength averaged 311.9 kN m kg-1 (range = 217.7-399.1 kN m kg-1), and elongation averaged 6.62% (range = 5.1-7.6%). A negative relationship was detected between fiber upper half mean length and lint index (r = -0.245) while a positive relationship was seen between fiber strength and lint index (r = 0.363). Positive correlations were also observed between strength and micronaire (r = 0.282). No significant correlation was detected between lint yield and fiber strength or fiber length. Seed index was positively correlated with boll size (r = 0.490) and fiber strength (r = 0.387). Elongation was positively correlated with lint index (r = 0.563), boll size (r = 0.425), lint yield (r = 0.582), micronaire (r = 0.574), and fiber strength (r = 0.627).
Origin Country	United States
Origin Detail	United States, Texas
Pedigree	Lubbock Dwarf was crossed with Texas Marker-1, DORS, and Stoneville Okra Leaf. Each cross was advanced without selection. In the F3, pollen was collected from each cross and bulked to pollinate each plant. A male-sterile line was introduced in the F4 generation. A minimum of 100 bolls were harvested, seeds were bulked, and a random sample was planted the next generation. No artificial selection was applied during population development. The GP was advanced for 9 total cycles of random mating.
Maternal Parent	N/A
Paternal Parent	N/A
Maternal Parent of	N/A
Paternal Parent of	N/A
Phenotypic Data	N/A
SSR Genotype Data	[view all 104]
SNP Genotype Data	N/A
Map	N/A
DNA Library	N/A
Sequence	N/A
Comments	N/A
Reference	Hinze L, Kohel RJ, Campbell T, Percy RG. Registration of Four Diverse Random‐Mated Cotton Germplasm Populations. Journal of Plant Registrations. 2014 Jan 1, 8(1):57-62.

Synonym
GP-967
PI 668119

Year	Publication
2013	Hinze L, Kohel RJ, Campbell T, Percy RG. Registration of Four Diverse Random‐Mated Cotton Germplasm Populations. Journal of Plant Registrations. 2014 Jan 1, 8(1):57-62.

Database	Accession
GRIN_Regist	GP-967
GRIN	PI 668119